Graveyard shift

When an abandoned textile mill is reopened, several employees meet mysterious deaths. The link between the killings: all occurred between the hours of eleven p.m. and seven a.m. The sadistic mill foreman has chosen a group to clean up the mill's rat infested basement, but what the workers find is a subterranean maze of tunnels leading to the cemetery, and an unimaginable horror that comes alive in the dead of night.